Quentin Tarantino’s next blockbuster may be his bloodiest yet, with reports the director is planning a movie about mass murderer Charles Manson starring two of Hollywood’s biggest female names.

Margot Robbie and Jennifer Lawrence have reportedly been approached to star in the as-yet untitled film, which will tell the story of Sharon Tate, the actress and wife of director Roman Polanski who was brutally murdered by Manson’s followers in 1969.

Robbie, 27, is expected to play Tate, who was 26 years old and eight-and-a-half months pregnant at the time of her death.

It’s not yet known what role Lawrence, 26, will play, but her involvement has been the subject of speculation since she was spotted leaving a lunch meeting with Tarantino last month.

Brad Pitt and Samuel L Jackson, two Tarantino favourites, are also in talks to appear in the movie.

Margot Robbie (left) will likely play murdered Hollywood starlet Sharon Tate (right). Photo: Getty

According to The Hollywood Reporter, the Oscar-winning director and screenwriter will write and direct the film himself and it’s likely Harvey and Bob Weinstein will produce it.

Of course, because it’s Hollywood, nothing is set in stone yet, but were the film to go ahead it would be Tarantino’s first film based on true events.

The Manson family, a commune of mostly women formed in San Francisco by aspiring singer-songwriter Charles Manson, gained international notoriety after the Tate murders, which took place at the Los Angeles home of Tate and Polanski on August 8, 1969.

Manson ordered four of his followers to the home, falsely believing it to still belong to a record producer who had previously rejected Manson’s music.

Brad Pitt (left) and Jennifer Lawrence (right) are also reportedly in talks with Tarantino. Photo: Getty

Polanski was out of town at the time of the home invasion, during which three women and one man murdered Tate and four others – three of them dinner guests and the fourth an 18-year-old man who was visiting the property’s caretaker.

Manson is now 82 years old and currently serving a life sentence in California State Prison.

Some have questioned the wisdom of Tarantino, a director whose films are known for their extreme violence and gore, tackling a story that remains a sensitive subject for many – particularly Polanski, who has since remarried.

“Tarantino’s sensibilities and true crime? These things go together like chocolate and onions,” Mashable writer Josh Dickey wrote.

However, many believe the rumoured film is a match made in heaven and the internet is awash with suggestions for actors who should play Manson. Shia LaBeouf, Aaron Paul, Boyd Holbrook, Joaquin Phoenix and Jake Gyllenhaal have all been put forward.

Page Six reports Tarantino’s film will commence shooting mid-next year.